Twitter has emailed some of its business users telling them that their data may have been compromised. These include business users that use Twitter’s advertising and analytics platforms.
The company, in an email, said that it stored billing data of some business users were stored accidentally inside the browser cache. Data that may have been exposed include their email addresses, phone numbers, and the last four digits of their credit card numbers.
Storage of billing data inside the browser cache means that it’s “possible” that other users who share the same computer might have been able to access the information, Twitter warned.
Despite the security mishap, Twitter says there is no evidence of compromise — or at least not yet. The company discovered the problem last month and has since resolved the issue. Besides, they have also emailed affected users to make them aware of the issue and advice on how to protect themselves in the future.
“We’re very sorry this happened. We recognise and appreciate the trust you place in us, and are committed to earning that trust every day,” the company wrote in an email sent to affected business users.
This incident adds on another mishap reported by the company in April regarding a bug that lets private data stored in Firefox’s browser cache like DMs.